Separator for electrical warp stop motions



Aug. 23, 1932. v, PAYNE 1,873,214

SEPARATOR FOR ELECTRICAL WARP STOP MOTIONS Filed June 3, 1951 Fla. 4

Jmfe tor- (9scam U .Fax r e MW? M attornegs Patented Aug. 23, 1932 UNITED STATES PATENT O CE OSCAR v. PAYNE, or woncnsrnn, MASSACHUSETTS, nssrenoa, T cnolvrrron eh KNOWLES LOQM WORKS, or WORCESTER,MASSACHUSETTS,A conro mrron; or"

MASSACHUSETTS sEPARA'roR roranrno'rnrcnr. wane sror ormons Application filed June's, 1931. Serial no. 541,849.

1 both top and bottom and so formed as to avoid short-circuiting of the oppositely charged electrodes of the contact bar. In warp, stop motionsofwide looms it is found that the contact and separator bars are m so long as to vibrate when the loom is in operation. In order to check this vibration, or

keep the bars in the'same relative position if they should move, it is customary to provide a so-called separator which is located approximately at the center of the motion.

If the bars are quite long two or more of the tactwith the separator;

separators may be located at spaced points across the width of the loom.

Electrical warp stop motions ordinarily comprise a bar having two electrodes one of which is .alive with respect to the loom. When a separator is used with sucha motion it is necessary to prevent such contact as would electrically unite the two electrodes. It is desirable that the various partsof the separator be made of metal to secure desired strength coupled with narrowness. It is to be understood that the warp threads lie on each side of the separator and for this reason the latter should be as thin as possible.

It'is a further object of my invention to protical exposed surface supported by and lying between the top and bottom-of the other electrode. My invention is more particularly adaptable to a stop motion employing this type'of bar, and it is a further object of my invention so to form the separator that the vertical live surface Will atno time have con- With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter set forth in the claims. I

In the accompanying drawing wherein a f3onvtenient embodiment of my invention is set -1; 7, V

Fig. 1 is aside elevation of a separator made according to my present-invention showing the contact and separator bars in section, Fig. 2 is a top plan view ofa motion for the part shownin Fig. Ilooking in the direction of arrow 2, V

Fig. 3 is a cross sectionof the contact bar and drop wire used in connect-ion with my invention, and I Fig. 4 is a fragmentary detail of the separator and a contact bar.

The'warp threads W lie across a series of separator bars 10 which may be supported at their endsby structure not shown herein but well understood. Above the separator bars described and is located a series of contact bars 11 each of center ofthe bar as at 13. A rib14 extends longitudinally along the bar preferablyat a point half way between the top and bottom. The live electrode element 15 has a vertical exposed. live surface 16 and is held in position by the bent top and bottom edges of the a ground electrode. Suitable insulation separates these electrodes so that they are ordiof a portion narily out of contact with each other. i

The drop wire 20 shown in Fig. 3 which is used with this style of bar has in the upper part thereof a slot 21 into which extends-a pair of similar opposite lobes or the like 22. The lobcs'are so related to the rib that clownward movement of the drop wire due to failure of its warp will cause engagement of one of the lobes by the rib, thereby effecting lateral movement of the other lobe into engagement with the surface 16. Ordinarily the live insulated electrode lies wholly within the cross-sectional outline ofthe grounded elec- I trode 12, and the lateral movement of the drop wire is therefore necessary in order to complete thecircuit.

The matter thus far described may be sima separating or bar. spacing member which free end of the cap "relation,

time of warp fault,

may be located at some point intermediate the ends of the bars so as to hold all of the V latter in properly spaced relation. The sepa rator comprises a body 40 which may be made of thin metal .or the like and h'as downwardly opening slots 41 which partially surround the separator bars 10. A bottom cap extension of the 42 is hinged as at 43 to an with the under body and lies in engagement sides of the separtor bars.

The upper part of the body is provided with slots 44 each of which is reduced as at 45 at the bottom thereof as shown in Fig. 4. The top part of each of these slots-44 is of suflicient width to accommodate the ribs 14 and the lower part of the slot 45 is preferably substantially the same width as the bottom bent part of the contact bar, being centrally located with respect to the upper part of the slot. By this arrangement it is possible to place the contact bars in the slots in the upper part of the body 40 with the ribs either to the left asshown in the three contact bars at the left in Fig. 1, or with the rib to the right,

' the .insulated surface 16 and the adjacent wall of the corresponding slot 44. r

A top cap 46 is pivoted as at 47 to an upwardly' projecting extension of the body. A clamping link 48 is pivoted as at 49 to the 46 and may be provided with a winged nut or the like 50 which acts as shownin Fig. 1 to hold the top and bottom caps clamped against the bars when the winged nut is tightened on the link 48.

Animportant feature of the invention relates; to means for preventing'the live electrodes from engaging the separator even thoughthe contact bars be tilted or inclined.

To accomplish this result I extend the horns 60 between and defining the slots ficient height to lie opposite the top bent edge 13 of the grounded electrodev 12.

as shown in Fig. 1, would revent engagement ofa surface 16 with the Body of the separator should the corresponding contact bar be somewhat inclined. The sides of the slots 44 are preferably made straight, as seen in Fig. 1. 7

From the foregoing it will be seen that I have provided a separator for use with relatively long contact bars so related to the latter that their component parts will be kept in proper electrical separation except at the This result is accomplished partly by reason of the fact that the horns 60 project upwardly far enough to engage the folded over edges 13 at the top of the contact bar, the sides of the slots 44 ing a rib on one 44 to a suf- 'suflicient width to receive This with the'live electrode 15. Also, the slots 44 I have their lower ends reduced so as to position the contact. bar with the rib either. to the right or to the left. It will further be seenthat the hinged cap may be made of strongmaterial such as metal and at the same time be grounded to the turned over part of theouter member of the'contact bar because of the fact thatthe top and bottom edges of this bar areof the same electrical tension.

' Having thusdescribed my invention it will be-seen that changes and modifications may be made thereinby those skilled in the art without departing from the spirit and scope of the invention and'I do notwish to be limited to the'details herein disclosed, but what Iclaim isz Y I 1. In an electrical lng an electric contact bar having a live'surface on one side thereof and having grounded surfaces above and below the live'sur face, a separator having a body provided with a slotto receive the-contact bar, the separator engaging thebar along the grounded surface only, the slot adjacent the live surface being sufficiently wideto keep the body outof contact with the live surface.

2. In an electrical warp ing a rib on oneside and an insulated live surface on the oppositeside, and a separator to space the bars, said separator having an opening a notch therein of less width, than the openinsulated live electrode spaced from the separator. i

stop motion, a I plurality of electric contact bars each havwarpstop motion hav 85..

for each bar, each opening having mg to receive a bar, the notch positioning the 3. In an electrical warp stop, motion, a

pluralityof electric contact bars each havside and I an insulated'live surface on the opposite side, andia separator to spacethe bars, said separator having an opening for each bar, each opening having a notch therein of less width than the opening to receive a bar,

rib on either side of the notch.

the opening being of the bar. with the 4. In an, electric warp stop motion'h'aving separator bars ,to divide the banks of, drop.

wires and position the warp, a contact bar having alive laterally exposed surface and an electrode extending above and below said surface, a separator member supported on the separator bars and having a spaced part to extend above the liVe surface-into engaging position relatively to "the upper part of.

the electrode to prevent engagement of the live surface andmember.

5. In an electrical warp stop motio'nhaving a bank of drop wires and warp positioning bars on opposite sides thereof, aseparator member supported on thebars and having spaced portions defining a slot, and an electric contact bar in the slot and having a lat- OSCAR v. PAYNE. 

